For the origin of polypropylene, nylon, PVC filler, polyethylene, polystyrene and polyester plastic Liaoning Haicheng is not the type of imported fine talc grade grade fineness of 1500 mesh silica content of Haicheng origin Liaoning 45% allows error 0.01kg content of 31% Magnesium Oxide 93 whiteness brand paint, paint, plastic strain use etc.